ABSTRACT
This chapter provides a simple wave guide model accounting for frequency and preload dependence while the effects of dynamic amplitude and temperature variation are disregarded. An effective axial dynamic stiffness model for an arbitrary preloaded conical rubber mounting is presented over an audible frequency range. A wave guide approach takes care of the component frequency dependent structure-borne sound properties while the non-linear static load dependence is described by a shape factor formulation. The axial dynamic stiffness exhibits a strong frequency and preload dependence, the latter revealed by amplitude and frequency shifts of the resonance peaks. The studied object is a conical rubber mounting typically used in ship engine suspension. The non-linear, preload dependent axial dynamic stiffness of a conical rubber mounting is investigated over the wide frequency range of 200 to 1100 Hz by measurements and analytical modeling.
